149
FNUS75 KCYS 101122
FWSCYS

Spot Forecast for Moonshine...Casper Dispatxh
National Weather Service Cheyenne WY
522 AM MDT Thu Sep 10 2026

If conditions become unrepresentative, contact the National Weather
Service at (307) 772-2227

...RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING...

.DISCUSSION...Critical fire weather environment ongoing this
morning and continuing through tonight into tomorrow. Humidities
may increase tomorrow enough to be just outside of critical
status, but don`t be surprised if they stay at critical even on
Friday. And recoveries will be very poor overnight, possibly not
even going over 25%. Winds should be mostly westerly, with gusts
nearing 40 mph through tomorrow, possibly even stronger tomorrow
afternoon between 40-45 mph.

.TODAY...

Sky/weather.........Sunny (5-15 percent).
CWR.................0 percent.
Max temperature.....Around 81.
Min humidity........8 percent.
Wind (20 ft)........West winds 15 to 21 mph. Gusts up to 37 mph
                    increasing to 38 mph late in the afternoon.
Mixing height.......7200 ft AGL.
Transport winds.....West 18 to 25 mph.
Smoke dispersal.....Poor (8200 knot-ft) early in the morning
                    increasing to very good (105100 knot-ft) in the
                    afternoon increasing to very good (133200
                    knot-ft) early in the morning increasing to
                    excellent (158300 knot-ft) in the afternoon in
                    the afternoon.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........12  14  8   4   3   3   4   7   10  10  9   15
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............54  53  56  59  66  70  75  78  79  81  79  79
RH..............24  25  24  23  18  15  11  10  9   8   9   8
20 FT wind dir..W   W   W   W   W   W   W   W   W   W   W   W
20 FT wind spd..15  16  16  17  18  20  20  20  21  21  21  20
20 FT wind gust.28  29  31  33  35  36  37  37  37  38  37  37
Mix hgt (kft)...0.5 0.5 0.6 1.2 2.1 3.5 5.0 6.1 7.0 7.1 7.2 7.0
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.18  20  21  22  23  24  24  25  25  25  25  24
SDspl kt-ft/10008   9   11  23  43  74  105 133 154 157 158 147

.TONIGHT...

Sky/weather.........Partly cloudy (25-35 percent) then becoming
                    mostly cloudy (60-70 percent).
CWR.................0 percent.
Min temperature.....Around 59.
Max humidity........22 percent.
Wind (20 ft)........West winds 16 to 20 mph with gusts to around 37
                    mph.
Mixing height.......500 ft AGL.
Transport winds.....West 22 to 25 mph.
Smoke dispersal..... very good (123800 knot-ft) early in the
                    evening decreasing to poor (33100 knot-ft) late
                    in the night decreasing to poor (10700 knot-ft)
                    early in the evening.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........18  39  52  63  60  57  67  62  70  70  78  73
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............79  76  71  69  67  65  65  63  63  62  61  61
RH..............8   9   11  11  12  14  14  15  16  17  19  19
20 FT wind dir..W   W   W   W   W   W   W   W   W   W   W   W
20 FT wind spd..20  18  17  17  17  18  20  20  18  18  17  16
20 FT wind gust.36  35  33  32  33  35  37  36  36  35  32  31
Mix hgt (kft)...5.9 1.7 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.5
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.24  23  22  22  22  23  24  24  25  25  25  23
SDspl kt-ft/1000124 33  11  11  11  11  12  12  12  12  12  11

.FRIDAY...

Sky/weather.........Mostly cloudy (65-75 percent) then becoming
                    mostly sunny (25-35 percent).
CWR.................0 percent.
Max temperature.....Around 80.
Min humidity........17 percent.
Wind (20 ft)........West winds 16 to 23 mph. Gusts up to 37 mph
                    increasing to 44 mph late in the morning.
Mixing height.......10400 ft AGL increasing to 11900 ft AGL late in
                    the afternoon.
Transport winds.....West 22 to 30 mph increasing to 31 to 36 mph in
                    the late morning and afternoon.
Smoke dispersal.....Poor (10400 knot-ft) early in the morning
                    increasing to good (63100 knot-ft) in the
                    afternoon increasing to excellent (271000
                    knot-ft).

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........73  73  66  44  35  39  35  23  27  24  18  32
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............61  59  62  65  70  74  77  79  80  79  79  78
RH..............19  22  21  20  20  20  19  18  17  18  18  19
20 FT wind dir..W   W   W   W   W   W   W   W   W   W   W   W
20 FT wind spd..16  16  16  18  20  21  23  23  23  23  22  21
20 FT wind gust.30  30  32  35  37  40  43  44  44  43  43  40
Mix hgt (kft)...0.5 0.6 1.4 2.4 5.0 7.0 8.7 10  11  11  12  11
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.22  22  24  30  35  36  36  35  35  36  32  31
SDspl kt-ft/100010  11  29  63  151 218 271 311 337 332 334 288

$$
Forecaster...Goatley
Requested by...Molly Wartenbee
Type of request...WILDFIRE
.TAG 2621451.3/CYS
.DELDT 09/10/26
.FormatterVersion 2.0.0
.EMAIL jbaldwin@blm.gov,wycpc@firenet.gov